Comparison of Length of Stay Between Children Admitted to an Observation Versus Inpatient Unit

Many children who require hospitalization are ideal candidates for care in pediatric observation units (POUs) rather than inpatient pediatric units. Differences in outcomes between children cared for in these 2 practice settings have not been thoroughly evaluated.

In this retrospective cohort study, children aged 0 to 18 years admitted to a POU at a community hospital or inpatient unit at a children's hospital were enrolled if they met specific clinical criteria. Information regarding the current illness, medical history, and hospital course was collected. Hospital length of stay (LOS) was analyzed as the primary outcome; secondary outcomes included conversion to inpatient care for the POU group and return to pediatric emergency department within 7 days. Subgroup analysis was conducted on children presenting with respiratory illnesses. Propensity scores were used as a predictor in the final model.

One hundred eighty-one admissions, 92 to POU and 89 to an inpatient unit, were analyzed. Mean LOS was 24.4 hours (95% confidence interval [CI], 21.7-27.1) for observation and 43.2 hours (95% CI, 37.8-48.6) for inpatient ( P < 0.01). Among the 126 children admitted for respiratory illnesses, the mean LOS was 32.3 hours (95% CI, 26.0-38.6) for observation and 48.1 hours (95% CI, 42.2-54.0) for inpatient ( P < 0.01). Survival analysis demonstrated a 1.61 (95% CI, 1.07-2.42) fold shorter time to discharge among children admitted to observation compared with inpatient ( P = 0.02) and a 1.70 (95% CI, 1.07-2.71) fold shorter time to discharge from observation compared with inpatient for respiratory illnesses ( P = 0.03). Within 7 days of discharge, 2 (2%) patients from the observation group and 1 (1%) from the inpatient group returned to the pediatric emergency department.

These findings suggest that POU may provide the means toward efficient care for children in community settings with illnesses requiring brief hospitalizations. Future work including prospective investigations is needed to ascertain the generalizability of these findings.